Service recorder



5 Sheets-Sheet 3 ,7 1 h 1/ a mm m 3 am J W, w

June 28, 1932. c d

' SERVICE RECORDER Filed March 25. 1921 Stand, 3

June 28, 1932. H. R. cooL 1,865,060"

SERVICE RECORDER Filed March 25, 1927 5 Sheets-Sheet 2 June 28, 1932. rH. R. COOL 7 1,865,060

' SERVICE RECORDER Y Filed March 25. 1927 5 Sheets-Sheet 3 Patented June28,1932

' UNITED STATES PATENT: OFFICE HENRY nosE COOL, or cLEvE Am), onro,assreno a'ro THE SERVICE RECORDER comrm, or cLEvELmn, 01110, acoaroaa'rrou or 01:10

sEav'IcE EEconnEE Application fl ed. Iarch 25, 1927. Serial No. 178,347.

This invention relates to service recorders such as are used forproducing a record of the periods of dut or idleness of a machine orother device. guch recorders, for exam- ;ple, are applied to taxi cabsordelivery trucks, or. to machines of various types set vices. Theinvention is an improvement upon the recorder shown, described andlclaimed in my prior Patent No. 1,493,067, granted May 6, 1924.

The object of the present invention is generally to improve theconstruction of said prior recorder, and in particular to'improve ithoseparts having to do with the attachment and operation of the record, aswell as those which produce the marking thereon. It also aims to improvethe mounting of the various parts'i'n he recorder casing, sothat the arefirmly secured and are always placed an replaced in the same position. Afurther object is to improve the casing parts, such as the hingethereof, to avoid possible shock and jar to the delicate internalmechanism, as well as to so construct and arrange the parts as to securedelicacy ofmovement of the operating pendulum and protect its pivotalmounting from lateral or other strains which might interfere with itsoperation or curtail its useful life.

A further object of the invention is to adapt the recorder to other useswhere the stylus will be actuated other than by vibration or g'ar,enabling the recorder to be used 1 to produce a record of opening andclosing movement of a .door or for other uses, all as will morefullyappear.

Further'objects of the invention are inv part will appear more Fig. 14.

1 Figs. 3'

a front elevation of the recorder in the position in which it is appliedin use, the casing being closed; Figs. 9 and 10 are cross sec 'tions onthe line 9-9 and 10-10, Fig. 7, Fig. up on foundations in a shop, or toother de- 11 is a detail section on the line 11-11, Fig. 1 Fig. 12 is adetail section on the line 12-12, Fig. 11; Figs. 13 and 14 are frontelevations of thestylus carr ing portion of the casing, and showing -moifications in the operating mechanism; Fig. 15 is a detail sectionalplan View on the line 15-15, Fig. 13; Fig. 16 is a detail sectionalelevation on the line 16-16, Fig. 13; and Figs. 17 and 18 are detail sectional views on the lines 17-17 and 18-18,

In many respects the recorder shown in the drawings is similar to thatof my prior patent referred 'to. For example, it comprises a suitablecasing, including a body 1 adapted for securementto a support, such asby being provided with screw holes 2, and to which is hingeda, hollowcover 3, chambered to receive a clock mechanism indicated generally at4, the final operating shaft 5 of which sup- .ports and turns thecircular record 6, which may be like that described in my prior patent.Depending upon' the particular use to which the instrument is put theclock mechanism may be geared to turn the record a com- 'pleterevolution .in one, twelve or twenty-four hours, or any other period,with increasing accuracy or fineness of indicat ons as the durationperiod is decreased.

. The mark on the record is produced by a pointer or stylus 7 attachedto the pendulum 1 i 8 andwhich stylus presses the record against ayielding backing member.

Coming now to theparticular improvements of the present invention, thebacking member is shown best in Figs. 2 and 6. It is. in the form of asmall hollow cup or thimble 9 having a smooth outer face 10 at itsclosed end against which the paper record pressed by the stylus, theother open end of the thimble having an annular external rib 11 and aseries of. short longitudinal slots 12, forming in effect a series ofIon 'tudinal arms, the metal of the thimble belng'resilient. The

cavity in said member receives a light compression spring 13. These twoparts, thimble and spring, are assembled, and the spring arms aresqueezed together so that the thimble can be introduced endwise into anopening- 14 laterally slotted, as at 15, at its bottom. One or more ofthe ribbed spring arms expand outwardly into said slot 15 and limitoutward movement of the backing thimble, but permit the latter to beurged outwardly with free sliding motion, but with guidance by the wallsof the opening 14 so that the record receiving face 10 is always heldparallel to the plane of the record disc. As a consequence said backingmember yieldingly holds the record against the pressure of the stylus onits opposite face.

The paper record is supported upon the clock spindle 5 to rotatetherewith and the present mechanism is arranged for quick and simpleattachment and detachment of records, but in a manner to avoid thenecessity of detaching any parts and thereby avoids loss. As shown. theclock spindle 5 is provided with a shoulder 16 forming a seat againstwhich is screwed the threaded hub 19 of a disc 1'? having peripherallobes or ears 18 to enable it to be readily grasped and turned with thefingers. The exposed face of the disc serves as a seat for the paperrecord 6. which is held in place on its seat hv two like arms 20 eachhaving Divot ears 21 confined in a recess of the hub 19. said arms attheir inner ends being bent and extending -with the disc. However. saidarms may be grasped at their ends and turned up to the dotted lineposition Fig. 7, or as shown in Fig. 11. enabling the paper record.which is perforated at its center to slip over the hub 19. to be removedand another one put in its place. after which the arms are turned downagain to clamping position.

The disc 17 including its central hub. springs 22 and arms 20,constitute a single unit, the parts of which are not detachable fromeach other. It is not removed from the clock in changing records. butmay be unscrewed from spindle 5 to remove the clock from the case. Italso serves as the winder for the clock. it being understood that thelobes 18 are used for turning it for this purpose.

Coming now to the clock movement. which is conventionally shown as ofcylindrical form, said movement is secured detachably in the casing sothat it may be taken out for repairs or the like. It licsadiacent a.flat wall 23 of the casing, which is exposed at the front when theinstrument is in use. This wall may serve as a name plate or identifyingdevice by providin it with any legends, such as a number or the name ofthe manufacturer, and is of a diameter large enough so that it restsagainst a shoulder 24: ofthe casing. Its periphery is provided with aseries. four being shown, of recesses 25 adapted to pass over lugs 26cast integral with the casing and under cut or recessed, as at 27. Oneof the lugs 26 and its cooperating recess 25 are larger than the others,so that the disc 23 may be inserted only in one position. Therefore. ifthe plate bears legends on its external surface they willalways beupright when the casing is properly attached to a support. Havinginserted the plate in its seat on shoulder 24 a split spring rin 28 issnapped into place in the under cut recesses 27, as shown in Fig. 10,

thereby removably locking the plate in place.

Said ring and the peripheral edges of the plate may be coated with waxor other suitable material fused into place, and adapted to melt at anytemperature high enough to be injurious to the delicate clock mechanismso that displacing of the wax or other material will indicate to themanufacturer that a returned device has suffered improper use. Acushioning disc 29 of felt or the like may be placed between the plate23 and the clock mechanism. Thelatter is removably held in the casing inlike manner with the name plate. to wit, by being provided with acircumferential flange 30 recessed at intervals to pass over lugs 31,one of which, marked 31a, is extra large, the movement being likewiseheld in place by a spring ring 32. The large. lug 31a insures that theclock movement will always be put in place in the same position. whichis particularly valuable because some clock movements. such as fordifferent duration periods. may be of dill'erent diameters, and thefinal shafts 5 thereof may be located eccentrically thereto, but eachsuch movement may have its external flange so formed that when themovement is inserted into the casing in its one correct position thefinal shaft 5 and hub 19 will always be located centrally-of the casingand properly relate the record to the stylus.

The hub 19 of the winding disc projects beyond the parting or separationplane between the two casing members, as shown in Fig. 7, andconsequently enters the chamber or recess in the body 1. Indeed, it mayextend beyond the plane of movementof the pendulum. As a consequence,the pendulum 8 is especially formed so that its movement cannot beinterfered with by the hub 19 or any part carried by the hollow cover 3.It is of open form with two like side arms 35 separated by a space 36 inwhich the hub 19 .is received, said arms being connected at their lowerends by a larger mass or area 37 of the metal and at their upper en lsby a cross bridge 38 in which the pivot pin 9 is mounted. The latter maybe a hard metal shaft coned at both ends and cast in a somewhat thickerboss of the'pendulum, such as by a die casting operation which willproduceaccurately shaped and balanced parts. The mounting for thependulum is of a character to permit adjustment of its pivot to take uppla andwear and to produce accurate centering and delicate movement ofthe stylus in one plane only. Specifically the pendulum pivot is carriedby a supporting member 40 made of a single 'ece of resilient metal instrap form bent bac k. upon itself, as at 41, to form a body of doublethickness clamped by the screw 42 in a trough-like seat 43 of the body1, the two arms of the strap then diverging into U-form as shown inFig.7 and being separated to receive between them a compression spring 44through which passes an adjusting screw45. Bytightening up this screwthe arms are caused to approach while the spring and the resiliency ofthe arms separate them when the screw is unscrewed.

This pivot mounting is specially formed for accuracy. It is of'hardresilient metal to reduce wear and permit adjustment.

After being shaped to the form shown in the drawings it is drilled toform two small holes 46, the drilling being accomplished by oneoperation -with the drill passing clear through. This insures ali ings.A small hardened steel tool shaped a 1 good deal like the pivot 39 isthen introuced between said arms with its pointed ends entering theholes and the two arms are pressed. together to swagethe metal at the,

oles and thereby form similar opposed conical seats. In the finalassembly the pendulum pivot itself is introduced into position and thetwo support arms are lightly tapped together so that each pivot servesas the final form for its own seats in its support.

By proper adjustmentthis arrangement produces a very satisfactory anddelicate pivotal mounting withproper adjustment to take up all lostmotion and insure free and easy swing of the pendulum in its own plane.Moreovezgthe pendulum and its supporting.

member 40 may be assembled and handled as a unit, all adjustmentsthereof being made to the finest degree beforev the unit is assembled inthe casing, which is accomplished by inserting the supporting memberwith the pendulum attached thereto into the seat in the casing andtightly'screwing up the screw 42. When the parts areassembled, as shown1/ in Fig. Lthe'head of the adjusting screw 45 is accessible foradjusting or re-adjusting the tension on the pivot bearing.

Obviously free pendulum motion must be permitted, but at the same timeit must be limited, for which purpose the casingbody 'is provided withbumper means, shown as a. post -47-'on which is mounted" a cushion,

.suclr as'j'a rubber washer 48. This bumper bumper.

ment of openand is purposely located on body 1 at such va point thatwhen the pendulumcontacts with it, pendulum motion is stopped, butwithout the production of any lateral strain or stress upon the pendulumpivot. may be accomplished only by proper dis tribution of the metal ofthe pendulum around its own pivot and with due regard for the desirablelocation of the bumper means. The pendulum is therefore speciallyshaped, as shown for theparticular location shown for the bumper andwould be otherwise shaped for every other location of the In the presentcase the pendulum is especially designed and shaped to provide thenecessary opening for. the hub 19 and for bumper 48 and to alsoconcentrate a substantially large mass of metal near its bottom toproduce sufiicient propelling force,

and in addition is soshaped asto properly distribute'the metal withreference to the bumper. In the particular arrangement .shown'inthedrawings the desired results are. accomplished by making the side arms35 ofthe pendulum relatively narrow or of light weight andconcentratingthe heavier. mass of pendulum metal at the lower ends ofsaid arms, so that the center of gravity of the pendulum as a whole ismuch nearer This to its lower endthan to its pivot, thereby securing thenecessary propulsive force for operating purposes, and the bumper isloca ted within the recess 36 of the pendulum at approximately and evena little below, if anything, the zone' of travel of the center ofgravity of'the bumper.

It remains to describe the lock and hinge mechanism which is of specialcharacter dcsigned particularly 'to protect the delicate clock mechanismenclosed within the casing. For example, the hinge shown in detail inlol Figs. 3 and 4 is arranged to protect the clock against violentimpacts. The clock is mounted in that art of the casing, the cover,which is 'droppe down when the casing is opened,

and if the hinge were loose the clock might v be subjected tounnecessary jars. The hinge therefore comprises a hollow cylindrical eye50 on one casing member, such as the base, and two hollow eyes 51 on theother casing member. "The opening in eye. 50 is larger than the hingepin 52, and in the extra space thereby provided are mounted two smallsleeves 53 with a compression spring 54 between them, while frictionwashers 55 are located between the eyes andareprovided with projections56 entering recesses of the eyes to prevent the washers from turning.'VVith thisarrangement the compression spring 54," which isinserted-"under tension,

exerts frictional efi'ect upon the washers, and

therefore-in. the joint, suflicientfto hold the hollow cover in anyosition to which it may be turned. It canv moved down to the horizontalposition and the friction in the jloint is sufficient to support itagainst further A lso, the joint around the edges of the casing issealed against dirt or moisture by providing sealing means, such as asmall rubber tube 57, lying in a groove of one member. such as the base,and projecting outwardly from its face for compression by the othermember when the casing is closed. The lock is of cam form to force thecasing parts together to a tight seal with the sealin-g member 57compressed. As shown the lock is of the Yale or any like type consistingof a barrel 60 having a lateral offset 61 pushed into a recess of thecover from its inside, the end of the barrel being exposed, as shown inFig. 8, for insertion of the key. The parts of this lock are assembledin the casing as a unit by inserting them into place with the offset 61lying between two small T-shaped plates 62 (see Figs. 5 and 7) the upperends of which are bent over as at 63 to hold the lock parts in'position. These plates are made of T-form to avoid any necessity ofrights or lefts. The lock of course includes a member rotated by the keyand having an inwardly extending portion 64 to which is attacheda camplate 65 adapted to be moved into a recess 66 of a small post 67 of thecasing body, and said plate 65 is slightly beveled on one edge as shownat 68, Fig. 1, so. that when it is turned to locking position it drawsthe parts of the casing together to compress the sealing washer andsecure a tight fit.

Only brief description of the operation of the recorder is necessary.With the casing closed, as in Fig. 7, and applied to the device whosevibrations are to be recorded, the clock turns the disc record. causingits outer portion to move between the yielding backing member andstylus. As long as the device is idle the stylus lies at rest and itstrack upon the record is a narrow line describing a circle around theaxis of the record. However,when the device is put into operation itsvibrations cause oscillations of the pendulum with movement of itsstylus back and forth across thenormal path of its narrow trace, with anlncrease 1n the width of the trace which continues so long as the deviceis in operation.

Figs. 13 to 18 inclusive, illustrate modifications where the recorderhas been adapted for special uses. Referring first to Figs. 13, 15 and16, the recorder is shown applied in use for producing a record of theopening and closing movements of a door, for example,-the door to astore. or other place where the proprietor desires to know at what timethe door has been opened or closed, enabling him to check on theappearance for duty of employees who ought to arrive early,as well asupon the closing time.

In the f rms shown in both Figs. 13 and 14, it may be assumed that theclock and record carrying half of the casing is identical with the formshown in Fig. 1. The modifications are merely in the manner and means ofoperating the stylus.

In Fig. 13 the stylus 7 is again mounted on the same pendulum member 8,but .the.

latter is held under the influence of a leaf spring 90, one end of whichis clamped b the set screw 70 in a slot in the post 47, the free end ofsaid spring bearing upon one of the arms of the pendulum.

The back of the casing is provided with two slots 71 through whichextend posts 72 on a slider 73 working in a recess in the back of thecasing and having a small lateral offset'74. This slider with its postsmay be inserted into position in either one of the slots 71 to adapt thedevice for right or left hand operation, the spring being likewiseadjusted to the proper right or left position, as indicated in dottedlines, Fig. 13. With the slider inserted, one of its posts 72 liesadjacent the side of the pendulum 8 and the slider may be suitably heldremovably in operating position, such as by the wire staple '7 Thedevice is fastened to a door 76 as shown in Fig. 15, with the offset 74entering the space between the door and casing 77 at the hinge joint.When the door is closed, as in full lines, the pendulum 8 is pushed overto its extreme right hand position, Fig. 13, but when the door isopened, as in dotted lines Fig. 15, the spring 90 ri oves the pendulumand the slider 73 to the left hand position, as shown in Fig. 13,thereby causing the stylus toproduce its radial mar on the record.

"With this arrangement, if the door is opened and closed frequentlyduring the day, every opening and closing movement will produce a radialmark on the record and, indeed, if the time period of the record'isproperly proportioned each individual door opening and closing movementcan be identified with the time when it occurred. If the door is openedinfrequently, as in the summer at a gas filling station, where the doormight be opened once in the morning and closed once at night, the recordwould consist-of two radial lines connecting two circular arcs withadifFere-nce in radius, so that a record of this kind would indicate notonly how frequently the door was opened or closed, but the duration ofits open and closed positions.

The arrangement shown in Fig. 13 is a simple adaptation of the same typeof recorder shown in Fig. 1 but for this special door operating use.enabling the same parts to be supplied without-any necessity of specialdies for new parts. This instrument. shown in Fig. 13, is, of course,useful for door operation as described, and also for recordingibrations, because by omitting or removag the spring 90.and the slider73, the penduim 8 becomes freely swinging and is useful or vibrationrecording purposes. If such nstruments are made in quantities, simplerperatin parts for the stylus may be prodded. I or example, Figs. 14: 17and 18 ll'ustrate a modification in which the stylus 7 s carried by ashort arm projecting from t V-shaped lever having two like arms 81 othequipped with elongated slots 82 to reeive a pin 83 on a sliding rod 84working 11 openings in guides 85 on the casing and raving an extension86 passing through the iide casing wall and adapted for operation sitherb hand or by any attachmentconiected t ereto. The two arms 81, togetherwith the provision of two sets of guides 85, 35a on both sides of thecasing, adapt this device to be worked either right handed or lefthanded; Fig. 17 illustrates in detail the pivot mounting or this speciallever, which is merely a threaded post 87 on a boss of the casing andpassing through an eye 88 of the lever.

What I claim is: I,

1. In a vibration recorder, clock mechanism having an operating shaft,unitary rec- HENRY ROSE COOL.

signature.

ord member supporting and driving'means adapted for attachment to saidshaft, compris ng a record member supporting plate carrying a hub formedfor attachment to said shaft, and oppositely disposed arms hinged tosaid hub and each having two positions parallel and normal to saidplate, and

s ring means adapted to hold said arms-in either of said two positions,said arms when parallel to the platebeing adapted to engage at theirouter ends a record member supported by said late and clamp it theretoand when exten mg normally from said plate being located wholly withinthe outer bound 8 anes of said hub and adapted to pass through a recordmember sleeved over the hub to seat on the plate. a Y W 2. A vibrationrecorder of that type in which the record member is moved between a,vibrating stylus and a yielding back'ng member, comprising a casingcontaining sai stylus and record member, said casing having an openingopposite the stylus and extending normal to member, and a yieldingbacking member movable in'said opening and presentin to the recordmember a flat receiving sur ace parallel to its plane.

3. A vibration recorder of the t pe described in claim 2, wherein thebacking member is of skirted form, its skirt being ided in the casingopening. 4. A vibration recorder of scribed in claim 2, wherein thebacking member is of skirted form, with its skirt guided in the casingopening, and the casing i ing is provi ed an' inner shoul erand the typede-J the plane of the record OPQII-

